Gun

Successfully complete the game. Go back to the first area in the game (Blackfoot Territory). Locate the higher boulder that leads up to a ledge and a gap. While on a horse at the left side of that boulder, jump and use your spurs until you land on top of the boulder. Then, get onto the ledge. Ride across the next two areas. Then stop between the two rocks in the water. Hold LT + RT + A until the confirmation sound is played. Press Start to enter the options screen and a new option named "Gun" will appear. Once selected, you can replay any main mission or side mission (from checkpoints if desired), view the intermission sequences, and toggle the help messages. Note: You will have your current weapons, items, and skills when a mission is replayed.

If you scared off the quarry in the Hunt side-missions, just remember where it was and go to the nearest trader. After you talk to him and return to where the animal disappeared, it will be there again.

Use the following trick to quickly finish the fire arrow level of securing the bridge. When shooting arrows, choose a spot for the crosshairs that lets you shoot the arrows that come from different directions. When the Indians jump over the wall do not shoot. Run around the TNT then kill them with melee attacks. When Quick Killer appears, only shoot when he is right away from the barrels. You are better off just using melee and your flask. Quick Killer is not too difficult to defeat.

Go to Dodge City. Go to the lower part of the bridge. Follow the path on the other side to reach a beach cave. Look inside for whiskey which will reappear over time after you leave the area. Note: The cave also contains ammunition and money.

Go to the Indian Hunter's hut. Once there, go to the building to the left of the hut. Go up the first set of stairs, and continue going straight. You should see a spout-type object coming out of the side of the building. Jump onto that spout, and walk toward the wall of the building. If done correctly, you should go through the wall, and into the inside of the house. Once inside, look to your left and you should see three whiskey bottles on the ground. You can pick these up as many times as desired and they will never go away.

For unlimited health, go to Hecht Ranch. Go to the shack next to the windmill. There you will find three whiskey bottles to restore your health.